Lifetime reproductive success of Snowy Plovers in coastal northern California

Herman, D. M.; Colwell, Mark A.

doi:10.1650/condor-15-18.1

Cited by 10 publications

(19 citation statements)

References 62 publications

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“…We categorized all other causes of failure as 'unknown' . We monitored all broods (each marked with a brood-specific color band) at approximately 2-5 day intervals (Colwell et al 2007b), and based percapita (male) fledging success on direct observations of the number of young that reached 28 days of age, which is the average fledging age (Page et al 2009, Herman & Colwell 2015.…”

Section: Field Methodsmentioning

confidence: 99%

“…wide effort to estimate population size, which has provided insight into population growth in relation to management actions (Eberhart-Phillips et al 2015). At a finer spatial scale, research across the Pacific coast range of the plover is required to quantify vital rates (e.g., apparent survivorship, annual and lifetime reproductive success) necessary to predict population growth (Stenzel et al 2007, Mullin et al 2010, Herman & Colwell 2015, as well as to evaluate effectiveness of management actions aimed at ameliorating factors that limit population recovery (e.g., Dinsmore et al 2014, 2017, Eberhart-Phillips et al 2015. Here, we provide details on the vital rates of a small, geographically-isolated subpopulation of Snowy Plovers that we have monitored for 16 years (2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016).…”

Section: Abstract Snowy Plovermentioning

confidence: 99%

“…and white sweet clover Melilotus albus. Detailed descriptions of habitats are provided elsewhere (Colwell et al 2010, Brindock & Colwell 2011, Herman & Colwell 2015. ese two habitats differ markedly in habitat quality as gauged by per-capita reproductive success (Colwell et al 2010, Herman & Colwell 2015, with riverine substrates affording greater crypsis, and hence survival, of eggs and chicks (Colwell et al 2007a(Colwell et al , 2011.…”

Section: Study Areamentioning

confidence: 99%

“…We marked virtually all chicks at hatch. Given our survey and banding effort, the high percentage of adults marked each year, and average adult longevity of 2.3 ± 1.8 years (Herman & Colwell 2015), we categorized the composition of the population as follows. We apportioned the annual number of breeding adults into percentages that represent local recruits (i.e., those we marked as chicks in our study population), immigrants banded elsewhere along the Pacific coast, or unmarked plovers, which we assumed to be immigrants.…”

Section: Data Summary and Analysismentioning

confidence: 99%

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Recent Snowy Plover population increase arises from high immigration rate in coastal northern California

Colwell¹,

Feucht²,

Lau³

et al. 2017

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Section: Field Methodsmentioning

confidence: 99%

Section: Abstract Snowy Plovermentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Section: Data Summary and Analysismentioning

confidence: 99%

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Recent Snowy Plover population increase arises from high immigration rate in coastal northern California

Colwell¹,

Feucht²,

Lau³

et al. 2017

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“…On the other hand, low temperatures also limit nestling condition (Krijgsveld et al, 2003), as colder nest microclimates require a higher investment in thermoregulation, at the expense of processes such as growth or development of the immune system (Dawson et al, 2005;Rodríguez & Barba, in press). Although many factors have been shown to affect fledgling production, they have seldom been studied simultaneously to determine their relative importance (Coulter & Bryan, 1995;Martín-Vivaldi et al, 1999;Knight & Rogers, 2004;Gullet et al, 2015;Herman & Colwell, 2015). Moreover, their relative weight may vary from year to year, so that long-time series are needed to elucidate each factor's net effect on long temporal scales.…”

Section: Introductionmentioning

confidence: 99%

Factors affecting fledgling output of great tits, Parus major, in the long term

Rodríguez¹,

Álvarez²,

Barba³

2016

Anim. Biodiv. Conserv.

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Factors affecting fledgling output of great tits, Parus major, in the long term.-Fledgling production has often been used as an estimator of avian reproductive success, and it is conditioned by factors affecting offspring development and/or survival during the nesting period. We aimed to determine which predictors influenced fledgling output among a set of basic breeding parameters and local temperature data collected over 25 years in a Mediterranean great tit, Parus major, population, using an information-theoretic approach for model selection. Of the studied variables, the number of hatchlings per nest was the single-most important predictor influencing fledgling production, with larger broods eventually yielding more fledglings, although mass prior to fledging may have been compromised. This result suggests an overall good adjustment between brood size and resource availability in the studied population. ResumenFactores que afectan a la producción de volantones en el carbonero común, Parus major, a largo plazo.-La producción de volantones ha sido frecuentemente utilizada para estimar el éxito reproductor de las aves y está condicionada por factores que afectan al desarrollo de los pollos, a la supervivencia o a ambos durante su estancia en el nido. Nuestro objetivo en este trabajo fue determinar los factores predictores que influyen en la producción de volantones a partir de un conjunto de parámetros reproductivos básicos y temperaturas locales recopilados durante 25 años en una población mediterránea de carbonero común, Parus major, haciendo uso de criterios de información para la selección de modelos. De las variables estudiadas, el número de huevos eclosionados por nido resultó ser el factor predictor con mayor influencia en la producción de volantones, de tal forma que las puestas más grandes originaron más volantones, si bien el peso de los pollos antes de abandonar el nido podría haberse visto comprometido. Este resultado sugiere que hay un buen ajuste general entre el tamaño de puesta y la disponibilidad de recursos en la población estudiada.Palabras clave: Producción de volantones, Supervivencia en el nido, Tamaño de puesta, Estudio a largo plazo

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Incubating snowy plovers (Charadrius nivosus) exhibit site-specific patterns of disturbance from human activities

Faillace

Smith

2016

Wildl. Res.

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Context Many shorebirds are threatened by human-caused disturbance. For snowy plovers, disturbance within nesting habitats has been implicated as a major contributing factor in their population decline through deleterious effects on breeding success. Very little is known about site specificity of disturbance from human activities for this species. Aims We examined the disturbance of incubating snowy plovers to determine if nesting shorebirds within one breeding population exhibited site-specific patterns of disturbance from human activities. Methods We recorded flush (i.e. flight or escape from a perceived threat) distances and time spent off the nest following approach by a single person on Sanibel and Cayo Costa Islands, two islands in south-west Florida that differ in daily human visitation, and by a person walking a dog on Sanibel. We used a Bayesian model framework to determine effects of location and approach type on flush distance and time spent off of the nest. Key results Birds nesting on Sanibel flushed at shorter distances from a solitary person without a dog than did birds nesting on Cayo Costa, but spent similar amounts of time off of nests following a flush. On Sanibel, nesting birds also flushed at significantly greater distances and spent significantly more time off of nests when flushed by a person walking a dog rather than by a person alone. Conclusions Within a population, nesting snowy plovers exhibit site- and stimulus-dependent patterns of disturbance. The intraspecific variation falls within the range of variation recorded among species of birds studied elsewhere. Although we cannot determine causation, we suggest habituation to human activities from a combination of high beach usage, smaller nesting exclusion zones, and narrower beach width on Sanibel compared to Cayo Costa as a likely explanation for this difference. Implications Set-back distances for symbolic fencing have been generalised across species and nesting locations. Our results suggest that disturbance of nesting shorebirds can be site-dependent even within one breeding population of a species. Set-back distances around shorebird nests must account for location and types of activities encountered, implying the need for more conservative implementation of set-back distances.

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Lifetime reproductive success of Snowy Plovers in coastal northern California

Abstract: iii ACKNOWLEDGMENTS

Cited by 10 publications

References 62 publications

Recent Snowy Plover population increase arises from high immigration rate in coastal northern California

Recent Snowy Plover population increase arises from high immigration rate in coastal northern California

Factors affecting fledgling output of great tits, Parus major, in the long term

Incubating snowy plovers (Charadrius nivosus) exhibit site-specific patterns of disturbance from human activities

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